STI Publications - View Publication Form #10541
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Publication Information
| Title | P_11 Resonance Extracted from pi-N Data and Its Stability | ||||
| Abstract | We study the stability of resonance poles in pi-N P_11 partial wave, particularly the Roper resonance, by varying parameters significantly within the EBAC dynamical coupled-channels model, keeping a good fit to the empirical amplitude. We find that two Roper poles are stable against the variation. However, for higher energies, the number of poles can change depending on how the parameters are fitted within error bars. We also developed a model with a bare nucleon which forms the physical nucleon by being dressed by the meson-cloud. We still find a good stability of the Roper poles. | ||||
| Author(s) | Satoshi Nakamura | ||||
| Publication Date | April 2012 | ||||
| Document Type | Meeting, Proceedings | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Meeting / Conference
| Meeting Name | NSTAR 2011 |
| Meeting Date | 5/17/2011 |
| Document Subtype | Invited Talk (slides) |
Proceedings
| Title | The 8th International Workshop on the Physics of Excited Nucleons: NSTAR 11 |
| Editor(s) | Volker Burkert, Mark Jones, Michael Pennington, David Richards |
| Publisher | AIP |
| Refereed | Yes |
| Page Number | 301-304 |
| Year | 2012 |
Attachments/Datasets/DOI Link
| Document(s) |
1106.pdf
(STI Document)
|
| DOI Link | |
| Dataset(s) | (none) |
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